Montjoy

Montjoy was a French herald. King Charles VI of France sent Montjoy as ambassador to England in 1415, with Louis, Duke of Guyenne having Montjoy deliver tennis balls to King Henry V of England as a "treasure" in order to bribe Henry into ignoring his duchies in France. This provoked Henry into invading France, and Montjoy was sent as royal messenger to Henry several more times, including warning him against fighting King Charles' army. However, he came to him after the Battle of Agincourt and capitulated to the English.